CN217578761U - Anti-counterfeiting protective film - Google Patents

Abstract

The utility model discloses an anti-fake protection film, including the base film layer, first adhesive linkage, dry film layer, second adhesive linkage and the release layer that set gradually. The utility model discloses a design to anti-fake protection film structure for it all has better anti-fake effect and reworking nature before the exposure or after the local exposure. In addition, with the help of the pattern moulds of different shapes, can form the protection film surface that has different illumination patterns, form appointed anti-fake LOGO, can give appointed anti-fake mark for different process sections.

Description

Anti-counterfeiting protective film

Technical Field

The utility model relates to an anti-fake technical field especially relates to an anti-fake protection film.

Background

The protective film is an important flexible packaging material and is widely applied to surface protection in the product transportation process and surface protection in the manufacturing process; die cutting protection, transfer pasting and protection of various metals, films and adhesive tapes; protecting the processing surfaces of various optical glasses; various plastic housings, keyboards and other plastic parts. When the common protective film is used for protection in the product manufacturing process or shipment protection, the common protective film can be completely peeled off easily without leaving marks; leaving a certain space for counterfeiting. It is difficult for ordinary consumers to identify the authenticity.

Patent CN206467190U discloses an anti-counterfeiting adhesive tape, which utilizes a release layer, a substrate layer, a second release layer, a printed layer and an adhesive layer which are sequentially stacked, and the release layer, the substrate layer, the second release layer, the printed layer and the adhesive layer are lifted when the box is applied, and the printed layer and the adhesive layer are together fallen on the box by the second release layer; the anti-counterfeiting effect is realized. The product prepared by the method can be used for uncovering anti-counterfeiting and has no way to be bonded for protection and adhesion again.

Patent CN110776862A discloses a special hot melt pressure sensitive adhesive of anti-fake sticky tape and preparation method thereof, has fine cohesive strength through special hot melt pressure sensitive adhesive, still has fine high temperature resistance simultaneously, can also can not lose original intensity at certain time of operation under higher temperature, can avoid anti-fake sticky tape very easily to be torn and not remain printing ink, lose anti-fake effect. Products made using this method have no way to identify which process to unseal, resulting in inter-process unnecessary deniability.

Patent CN 212032541U discloses a multilayer uncovering type anti-counterfeiting label, relating to the field of anti-counterfeiting labels. The anti-counterfeiting printing system comprises a white printing ink layer, a top covering layer and a middle protective film, wherein a middle protective film is attached to the white printing ink layer, the top covering layer is attached to the middle protective film, a variable digital printing layer is arranged between the white printing ink layer and the middle protective film, a first glue layer is arranged on the bottom end face of the white printing ink layer, the top covering layer is arranged on the middle protective film, a second glue layer is arranged on the contact face of the top covering layer and the middle protective film, a printing layer is arranged at the top of the top covering layer, and a product information and anti-counterfeiting information inquiring method is printed on the printing layer. The product prepared by the method has more design structure process steps and higher requirement on the double-layer substrate printing process of the middle protective film layer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-fake protection film when bringing the protection for the quilt thing, has better heavy industry nature and anti-fake effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an anti-counterfeiting protective film comprises a base film layer, a first adhesive layer, a dry film layer, a second adhesive layer and a release layer which are sequentially arranged.

Preferably, the base film layer is a PET base film layer, a BOPP base film layer or a PI base film layer, and the thickness of the base film layer is 25-50 μm.

Preferably, the thickness of the first adhesive layer is not less than 5 μm.

Preferably, the first adhesive layer has a peel force of 10g/inch or less.

Preferably, the thickness of the dry film layer is more than or equal to 10 μm.

Preferably, the thickness of the second adhesive layer is not less than 5 μm.

Preferably, the peeling force of the second adhesive layer is equal to or more than 50g/inch.

Preferably, the peel force of the first adhesive layer is smaller than the peel force of the second adhesive layer.

Preferably, the first adhesive layer and the second adhesive layer are the same quick-setting material layer, and the quick-setting material layer is an acrylate adhesive layer, an epoxy acrylate adhesive layer, a polyurethane acrylate adhesive layer or a polyurethane adhesive layer.

Preferably, the release layer is a release film or release paper; and/or the presence of a gas in the gas,

the release force of the release layer is not more than 20g/inch; and/or the presence of a gas in the gas,

the thickness of the release layer is 25-50 μm.

The utility model discloses an anti-fake protection film, structural design is simple, for prior art, has following beneficial effect:

on one hand, after the attached object is attached, different patterns are formed on the surface of the protective film by irradiating pattern molds with different shapes by adopting ultraviolet light, so that specified anti-counterfeiting LOGO is formed, and specified anti-counterfeiting marks can be given to different process sections;

on the other hand, the anti-counterfeiting protective film structure is designed, so that the product has reworkability before exposure or after local exposure;

meanwhile, for the condition of needing rework after local exposure, the anti-counterfeiting protective film still has the anti-counterfeiting effect after the local exposure because the color of the exposed dry film and the unexposed part have obvious color difference; in case of reworking before exposure, the torn anti-fake protecting film has partial dry film layer and thus anti-fake effect.

Drawings

Fig. 1 is a schematic structural diagram of the anti-counterfeiting protective film provided by the application.

In the above drawings: 1. a base film layer; 2. a first adhesive layer; 3. a dry film layer; 4. a second adhesive layer; 5. and a release layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The anti-counterfeiting protective film disclosed by the application comprises the following components in sequence from top to bottom as shown in figure 1: the adhesive comprises a base film layer 1, a first adhesive layer 2, a dry film layer 3, a second adhesive layer 4 and a release layer 5;

wherein, the surface of the base film layer 1, which is jointed with the first adhesive layer 2, needs to be subjected to corona treatment before jointing, the base film layer 1 is preferably a PET base film layer, a BOPP base film layer or a PI base film layer, and the thickness is preferably 25-50 μm.

The first adhesive layer 2 and the second adhesive layer 4 are preferably the same quick-setting material layers with the thickness being more than or equal to 5 microns, the quick-setting material layers are cured without later curing, preferably acrylate adhesive layers, epoxy acrylate adhesive layers, polyurethane acrylate adhesive layers or polyurethane adhesive layers, more preferably acrylate adhesive layers, and can be prepared from common commercial products;

the peeling force of the first adhesive layer 2 is smaller than that of the second adhesive layer 4, preferably, the peeling force of the first adhesive layer 2 is less than or equal to 10g/inch, and the peeling force of the second adhesive layer 4 is greater than or equal to 50g/inch.

The thickness of the dry film layer 3 is preferably more than or equal to 10 mu m, no special requirements are required for the material of the dry film, and the dry film can be prepared by adopting a common commercial product.

The release layer 5 is preferably release film or release paper, the release force is preferably less than or equal to 20g/inch, and the thickness is preferably 25-50 μm.

The utility model discloses an anti-fake protection film uses conventional technology can accomplish, preparation simple process in the preparation process. The preparation method comprises the following specific steps:

1) Coating a first adhesive layer on the corona surface of the base film layer, and sending the base film layer into an oven for drying and curing; after the product is taken out of the oven, a dry film layer is attached to the surface of the first bonding layer, and a semi-finished product is prepared;

2) Coating a second adhesive layer on the release surface of the release layer, and sending the second adhesive layer into an oven for drying and curing; and (3) after the film is taken out of the oven, the second adhesive layer is attached to the dry film layer of the semi-finished product in the step 1), and then the film is rolled, the whole is packaged by a black film, and the film is kept stand for 24H at normal temperature to obtain the anti-counterfeiting protective film.

Generally, reworking of a security protection film after attaching an object to be attached may be carried out in two ways:

a. if rework is required before exposure: for this application anti-fake protection film, because of the dry film does not have the illumination polymerization, the dry film is softer, simultaneously, be first adhesive linkage and second adhesive linkage with dry film bonding's difference, the characteristic of this kind of structural design and dry film itself, can make the dry film layer take place the spalling at the in-process of tearing anti-fake protection film, lead to the basic rete, first adhesive linkage and part dry film layer are torn, and second adhesive linkage and part dry film layer can remain on the surface of being pasted, still have certain viscidity because of the dry film layer that does not polymerize, after clearing away remaining part on being pasted, the part of tearing can laminate again and be pasted the surface of being pasted, make anti-fake protection film have reworkability. In addition, the torn part still contains a part of dry film layer, so that the anti-counterfeiting effect is still achieved;

b. if rework is required after the partial exposure: because of having taken place polymerization reaction through the dry film after the local exposure, anti-fake protection film can be torn by complete, and the phenomenon of spalling can not appear, and simultaneously, but the adhesive linkage of reworking is chooseed for use to the second adhesive linkage, can repeat the bonding for anti-fake protection film has reworkability. In addition, the color of the dry film after local exposure has obvious color difference with the unexposed part, so the anti-counterfeiting effect is still achieved.

The anti-counterfeiting protective film has the advantages of simple structure, few preparation process steps, simplified production process, reduced production cost, and better reworking property and anti-counterfeiting effect when the anti-counterfeiting protective film is used for unexposed or local exposure.

The invention will be further described with reference to the following examples:

example 1

1) The method comprises the following steps of (1) coating a fast-curing acrylate adhesive with 5 mu m of stripping force of less than or equal to 10g/inch on a corona surface of a PET (polyethylene terephthalate) base film layer by taking the PET with the thickness of 25 mu m as the base film layer, and feeding the PET base film layer into an oven for drying and curing; after the product is taken out of the oven, a dry film layer with the thickness of 10 mu m is attached to one surface coated with the fast-curing acrylate adhesive, and a semi-finished product is prepared;

2) Coating a quick-setting acrylate adhesive with the stripping force of more than or equal to 50g/inch of 5 microns on the release surface of a release film with the thickness of 30 microns, and sending the release film into an oven for drying and curing; and (3) after the product is taken out of the oven, one surface coated with the fast-setting acrylate adhesive is attached to the dry film layer of the semi-finished product in the step 1), and then the product is rolled, packaged into a whole by using a black film, and kept stand for 24H at normal temperature to obtain the anti-counterfeiting protective film.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims (10)

1. The anti-counterfeiting protective film is characterized by comprising a base film layer (1), a first adhesive layer (2), a dry film layer (3), a second adhesive layer (4) and a release layer (5) which are sequentially arranged.

2. The anti-counterfeiting protective film according to claim 1, wherein the base film layer (1) is a PET base film layer, a BOPP base film layer or a PI base film layer, and the thickness of the base film layer (1) is 25-50 μm.

3. Anti-counterfeiting protective film according to claim 1, wherein the thickness of the first adhesive layer (2) is not less than 5 μm.

4. A forgery-prevention protection film according to claim 1, wherein said first adhesive layer (2) has a peel force of 10g/inch or less.

5. Anti-counterfeiting protective film according to claim 1, wherein the thickness of the dry film layer (3) is not less than 10 μm.

6. Anti-counterfeiting protective film according to claim 1, wherein the thickness of the second adhesive layer (4) is not less than 5 μm.

7. Anti-counterfeiting protective film according to claim 1, wherein the peel force of the second adhesive layer (4) is not less than 50g/inch.

8. A security film according to claim 1, wherein the peel force of the first adhesive layer (2) is smaller than the peel force of the second adhesive layer (4).

9. A security protection film according to claim 1,

the first bonding layer (2) and the second bonding layer (4) are the same quick-setting material layer, and the quick-setting material layer is an acrylate bonding layer, an epoxy acrylate bonding layer, a polyurethane acrylate bonding layer or a polyurethane bonding layer.

10. A security protection film according to claim 1,

the release layer (5) is a release film or release paper; and/or the presence of a gas in the gas,

the release force of the release layer (5) is less than or equal to 20g/inch; and/or the presence of a gas in the gas,

the thickness of the release layer (5) is 25-50 μm.

Images